|
Título:
|
Dispersive calculation of complex Regge trajectories for the lightest f_2 resonances and the K^?(892)
|
|
Autores:
|
Carrasco, J. A. ;
Nebreda Manjón, Jenifer ;
Peláez Sagredo, José Ramón
|
|
Tipo de documento:
|
texto impreso
|
|
Editorial:
|
Elsevier Science BV, 2015-10-07
|
|
Dimensiones:
|
application/pdf
|
|
Nota general:
|
cc_by
info:eu-repo/semantics/openAccess
|
|
Idiomas:
|
|
|
Palabras clave:
|
Estado = Publicado
,
Materia = Ciencias: Física: Física-Modelos matemáticos
,
Materia = Ciencias: Física: Física matemática
,
Tipo = Artículo
|
|
Resumen:
|
We apply a recently developed dispersive formalism to calculate the Regge trajectories of the f_2(1270), f´_ 2(1525) and K^?(892) mesons. Trajectories are calculated, not fitted to a family of resonances. Assuming that these resonances can be treated in the elastic approximation, the only input are the pole position and residue of a resonance. In all three cases, the predicted Regge trajectories are almost real and linear, with slopes in agreement with the universal value of order 1 GeV_(?2). We also show how these results barely change when considering more than two subtractions in the dispersive formalism.
|
|
En línea:
|
https://eprints.ucm.es/34973/1/nebreda12libre.pdf
|
